{
  "manageEntity": {
    "action": "Update",
    "entityId": "56351909",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xebfc049986049eb69778d290b5cc6e27a7e05033c1d41a52986a6726156ae534",
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    "signer": "0xB8Afd8d47cD4e8405FAc512911dB880574bC66C0",
    "userId": "56351909"
  }
}